Hello I just bought a 8.8 ford with rear disc and 4.10 clutch pos, with 37,000 miles on it. 200.00 local junk yard 2000 explorer. Backing plate to backing plate is 54" you have about 50" I paid mosher engineing 110.00 to narrow 4" and they sold me two after market axles correct lenth for 250.00 a pair you need to weld perchs on to housing and refit drive shaft but you can do this on a low budget as long as you have time, its time or money I guess. 373 gear is easy on gas yet still a great gear.